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lR. M. BROWN LGOMOTIVE Original Filed Jlily 11. 192:5l r 5l Sheets-Sheet' l March 9,1926. Re. 16,285

RA Y, /17 Pow/M JNVENTOR.y

FY @Www ATTORNEY.

March 9 192e.

R. M. BROWN LOCOMOTIVE 5 sheetssheet 2- Original Filed July ll. 1923 R. M. BROWN LOCOMOTIVE l original Flea Julyv 1l. 1923 5 Sheets-Sheet 5 Marh' 9,1926. Re. 16,285

)EF/4K M BPovi/A/ NVENTOR.

BY @WM A TTORNE Y.

lMareh 9 1926.

Y Re, 16,285

R. M. BROWN LOCOMOTIVE 1923 5 Sheets-Sheet 5 Original Filed July l1.

NVENTOR.

BY pf@ Reissuie'd Mar. 9, 1926. i l i Re.

vUNrraD s'TM'E-:s PATENT vclsica.

BAY n. BROWN, F YONKEBS, YORK l i Locono'nvn.

Original No. 1,570,228, dated January 19, 1926, Serial No. 650,850, filed July 11., 1923. Application; for

reissue vfiled February 2, 1926. Serial No. 85,604. v

To all whom it may concern: Fig. 7 is a sectional view on line 7 -7 of Be it known that I, RAY M. BROWN, 165 Fig.l 5 looking in the direction indicated by 55 Bruce Avenue, a. citizen of the United thearows; States,'and. resident of Yonkers, New York, Fig. 8 is a view of the modification shown have invented certain new and useful Imin Fig. 5, this view corresponding to Fig. 4

provements in Locomotives, of which the of the first form; following is a description. Fig. 9 is a sectional top view of the front 60 My invention relates to locomotives, parend ofk a.v ylocomotive 'illustrating a.` modified ticularl those equipped with superheaters. form of myinvention; l0 It has or its purpose the provision of steam Fig. 10 1s a. view similar to Fig. 9 showing throttlin means with a number of im a. vfurther modification. proved eatures which will appear clearly F 1g. 4* is on a somewhat enlargedscale, 05 from the description given below, and Whlle Figs. 9 and 10 are on a. somewhat -among which may be mentioned, the folsmaller scale than Figs. 1 to 8. l v la -10wing 4 -Through0ut the views, portions have been My devicemakes it possible to distribute broken away and omitted when this seemed the steam accurately through the superadvisable in the interest of clearness. y 70 heater so that each portion of the super- Reference williirstbemade to the orm of heater does its proper'portion of the work. my invention illustrated v'in Figs. 1 to 4. Ak ready means is provided by my device The 'steam and waters ace 1 of the loco- Vto v ass an initial small amount of steam motive tofwhich I here s o w invention apwhich will4 balance the main throttling plied, 1s separated from the smoke box 2 by 75 means so they will open easily. the tube sheet 3.

My device provides a ready means for A series of ues 4 extends back from this v supplying the proper amount of drifting liuc sheet tothe back fine-sheet (not shown) steam. in the usual manner." Only onerow of these The improved throttling means I pro. filles appears in the drawing; but it will be 30 vide is easy to make steam-tight and easy to understood that there are other rows below keep steam-tight, as all large throttle bodies this top row. in which warping and distortion are bound Wlthln these iues 4: there are located the to occur are elimmated, 5 usual super-heater elements or' units 5, whose The invention is illustrated in the drawends are connected to thes'uperheater header 85 ings which accompany this description, In 6. This superheater header has two -chamthese drawings, Fig. 1 shows a vertical 10nbers 7 and 8, from which the intermeshing gitudinal section of the, upper part of a lingers?) and 10 extend in the usual way. It locomotive equipped with my improved 1s to these intermeshing fingersthat the ends throttling means; of the s uperheater elements 5are connected. 90

2 `is a sectional view on line 22 of Steam 1S Suppliedto the. chamber 7k by the Fig. 1 lookin in the direction of the arrows, dry plpe .11. I 40 a, portion of lis View being a Section 0n lijm" AS fill' aS described the arrangement iS 0f 2b 2 of Fig 1; y va usual form. To control the flow of steam Fig. 3 is a fragmentary sectional view on through the dry Plpe 11 andthe SUP'hetela 95 I line 3--3 ofFig. 1 looking in the direction Some controlling .throttle iS required- 'Th indicated by the arrows; almost universe practice formerly. was -to iris a View of a Portion 0f the delocatetllls thIOlZtle al'tll lllletelld vice viewed from the leftv end of Fig. 2;. dry pipe 1l. It-is however, "nof'longer un- Fig.l 4 shows a detail onan enlarged usual to place the throttle at'some loint be- 109 scale; y tween the superheater header and t 1e steam lig 5 is a, view similar to Fig, 1 showchest and this arrangement hasvcert'ain ad:l 50. in a modified form of my invention; vantages It has been proposed in thel past Fig. 6 is a` front view of Fig. 5, with por- Vto use yeither a single throttle ora pair of tions in section on line fft-and others in throttles in the latter location. In case two section on line 6- -6"; r throttles wereemployed, one of them controlled the flow through one of the steam pipes leading the steam to'l one side of the locomotive the other throttle controlling a steam pipe on the other side.

My invention contemplates put-ting the controlling throttle means between the superheater and the steam chests. Instead however, of using a single large throttle or two throttles (one for each steam pipe) I use a series of small poppet valves. These poppet valves are preferably located directly in the second chamber of the superheater header, i.- e., the chamber which receives the superbe-ated steam ,from the superheater elements, this second chamber being somewhat modified for this purpose. A partition 14 separates it into two Vparts and the steam, in-

ste'ad of being allowed to flow directly from chamber 8 to the steam pipes 12, must flow through the ports 13 in this partition 14. These ports are controlled by the poppet valves 15. These poppet valves may be of any usual or preferred material or general construction; for purposes of illustration Iv show them as comprising a body 16 and a stem 17, the latter reciprocating in the spider 18. To actuate these valves, I provide each with an upward extension 19, which has at` its upper end a head 20, this'head projecting laterally beyond the extension 19. The detailed construction of the upper end of the extension 19 isshown in Fig. 4?.- A tapped hole `extends into the upper end of the ex; tension and thescrew 19 is screwed into this hole, the distance to which it is screwed in being determined by the thickness of the distance piece 19. By selecting a distance piece of proper thickness the distance of head 20 from the valve body can be varied as desired. y

A rocker shaft 21 extends through the chamber 8, parallel and adjacent to the series of poppet valves. `From this shaft 21 there extends a series of arms 22, one for each valve. Each arm 22 is forked, the two branches 23-23 embracing the valve extension 19; The two branches 213-23 will engage the under surface of the heads 2() if the shaft 21 is slightly rotated in one direction, and will engage the upper surfaces of the valve bodies 16 if the shaft i: slightly rotated in the opposite direction.

To rotate or rock the shaft 21 through the required angle, it is extended outward from the space 8 tlnough a stuffing box 26 and has secured to its outer end the arm 27. From the end of this arm 27 there extends back to the cab the rod 28, the farther end of this rod 28 being connected by suitable mechanism to the engineers throttle lever so it may be operated by give the ment.

The stuffing operating the y the engineer to shaft 21 the proper rocking moveboxes required for the shaft throtthng means are Outside uniform.

of the smoke-box, the direct current that packing troubles are minimized.

lith the describedconstruction and ari rangement of these valves it is possible to adjust them to open them in any sequence desired and to have farther than others during normal running of t-he locomotive. T he preferred means of accomplishing this is to vary the spaces between the upper surface of branches 23 and the lower surface of head 20 which they engage. This variation may be made .by grinding one or the other of these surfaces or preferably by adjusting the height of the head 20 above the valve in the manner above described or by some other preferred means. In Fig 2 for example, it will be noted that the branches 23-23 of the two valves near the center are in engagement with the heads 20while. the remaining ones are still some distance from their heads 20. The moment the rotation or rocking of the shaft 21 starts, these two central valves Will open. Afterthey have been opened, the branches 23-23 of the other valves will come into engage- .ment with their heads 20 and these valves will then be raised from their seats.

One purpose of this is that-one or two of' `of all the valves so that they become balanced and are easily opened.

It will be evident that by suitably adjusting the heads 20 some of the valves will be open farther than others when the engineer has moved the, lever all the way. It has been found that the steam flow through the `various parts of the superheater is not always The reason for this probably is' `that in the arrangement now commonly used the steamis admitted at a single point to one chamber of the header and is taken olf at only two points from theopposite chamber and that there will be certain paths including the superheater elements nearest the inlet and outlet which offer less resistance than certain other paths and which therefore receive more than their proportion of the steam flow. By my arrangement it is possible to decrease the resistance to the steam desired or to increase it over others. By setting those poppct valves which lie opposite the areas of higher resistance so they will be opened wider than the others, more steam will be directed tc such areas. The entire number of superheater units can thus be made to bear'equal portions of the load. This is illustrated in Fig. 2, where the branches 23 actuating the two central' valves are in engagement with their heads 20, ready to raise them at the rst part of the' motion of -shaft 2l, while for those away from the center the branches 23 are successively farther and farther from some of them opened their heads 20, and will engage them successively as the shaft 21 rotates. lVhen the last valves are Viinally opened, those at the center are evidently opena greater distance than those whose opening occurred last. The order in time and amount of opening will in practice vary with' circumstances.

It is common practice for locomotive engineers to crack the throttle while drifting. This means that instead of shutting otl the Steam supply entirely when the 1ocomotive requires no motive power, as on down grades or when approaching a stop, the engineer leaves the throttle slightly open. The purpose of thus supplying a small amount of drifting steam is to prevent air and cinders from being drawn into the steam chest and cylinders from the smokebox. This cracking the throttle requires considerable skill with throttles of the usual size. If the throttle is o ened too wide the steam supply-Will drive t e engine and an unealle-d for amountof braking will have to be done; while, if it is not opened wide enough the purpose is not accomplished. Vith my arrangement it is easy to supply the right amount of drifting steam as the first movement of thethrottle lever opens only one or two small valves and a which openings arenormally closed by thev covers 30. As illustrated, the extensions 19 are flat, and the valves cannot be 'ground Without disengaging them from the branches 23 of arms 22.- This disengagement, as well :1s shifting the arms out of the Way entirely for insertion or removal of the 'valves is made possible by the following provision. The stuffing box 26 as Well as the bearing for the opposite end 34.0f shaft 21 are formed in separate plates 31, and 31, which are secured to the header by cap screws 33 (see Fig. 4). The opening in theheader wall proper in each case is in the Vform of a slot, 32 (see Figs. 3 and 4); so that. after screws 33 are removed, the shaft 21 can be slid back out of the Way.

The valves need not all be arranged in a single row as so far described. Y'

In the modification illustrated lin. Figs. 5.l 6, 7 and 8 there is one -series of valves 35-35 lying in a' single row across the header and correspondin tothe single row in vthe principal form rst described. In addition to this there is a shorter series of valves 36'36 at each side of the stack and located in an extension 8 of the space 8. These valves are in every respectsimilar to The operationof these additional valves 36 will at once be clear. They too have the adjustable features described above, which features permits the balance of the valves and the proper distribution of the steam flow.- The provision for insertion, removal, and grinding of the additional valves is strictly similar to that fertile first series and will be clear from the drawing.

Instead of Abeing' located in `a row across' the smoke box, the valves may also be placed as illustrated in Fig. 9 in rows extending lengthwise. Inthis figure two such rows are'shown, one on eachv side of the stok. Steam`r from the superheater header flows to chambers 415-45,- thence through` the valves 46-46 tothe steam pipes 47.-#47. The valves 46-46 are operated by shafts, just as those described above. These shafts arev actuated by r`0d 28 throughthe bell crank 48 and the links 49 and 50.

In the modification shown in Fig.l 10 `I illustrate a form in which the valves are placed forward of the stack. The two connections 55-55 instead of deliveringysteam directly to the steam pipes as in the present standard practice deliver it to theA connections 51-51 which carry it to the throttle casing 52. In this throttle casing a-re located the valves 53-53, Which are constructed and operated as those above described, the rodv 28 actuating the shaft extending transversely through the chamberV 52. The steam passed by the poppet valves 53 passes to the steam chest by means of the connections 5454. Y

The forms shown in Figs. 9 and 10 illustrate that my invention can be applied to locomotives equipped with existing styles -of superheater headers. z

It will be obvious that in practicing my invention` many variations are possible without departing from the spirit of the subjoined claims. For example it is obviously not required that the valves be of the precise form of those that I show or. that they be in the precise location shown or that the mechanism actuating them be just like that shown and described Vhat I claim is i 1. In apparatus o1' the class described, the combination of a superheater comprising an elongated chamber having a series of ports along its length through which superheated steam is delivered tothe chamber, and having an outlet through which the steam is conveyed to the point of use; partitioning means separating the yinlet ports from the outlet and provided with a series of relatively small openings'distributed opposite said steam delivery ports; and a correspondin series of valves each controlling one of saiv openings. a

2. In apparatus of the class described, the combination of a superheater comprisin a chamber having a series of ports t rougi which superheated steam is delivered'to tie chamber and having an outlet through which it is delivered to the point of use; partitioning `means separating the. inlet 'ports from the outlet and provided with a.

series of relatively small openings'distributed opposite said inlet ports and a corresponding series of valves each controlling one of said openings.

3. In'apparatus of the class described, the combination of a superheater comprising an elongated chamber having a series of y ports along its-len h through which su ereated steam is elivered tothe cham er, and having an outlet through which the steam is conveyed to the point of use; partitioning means separating the inlet ports from the outlet and provided with a series of relatively small openings distributed opposite said'steam delivery ports; and a series of relatively small poppet valves each controlling one of said openings and opening in a direction contrary to the steam flow.

4. In apparatus ofthe class described, the combination of a superheater comprising an elongated chamber having a series of ports along its length throu h which superheated steam is delivered to t e chamber, and having an outlet throughwhich the steam is conveyed to the point of use; and valve means controlling the steam flow from said chamberand Adistributed along a line'opposite said steam inlet ports. n

5. In apparatus of the class described, the combination of a su erheater comprising an elongated chamber iaving a series of ports along its length through which superheated steam is delivered to the chamber, and having an outlet through which the steam isk conveyed to ythe point of use; partitioning means separating the inlet ports from the outlet and rovided with a series ofrelatively smal openings distributed opposite said steam delivery ports; a` correspondin` series of valves, each controlling one of sai openings; means to operate said valves, and adjusting means associated with the valves whereby the valves may be caused'to openin any desired order,

6. Inapparatus of the `class described, the combination of a su elongated chamber aving a series of ports along its length throu h which superheated 'steam is delivered to t e chamber, and having an outlet throughv which lthe steam is conveyed to the point of usegpartitiouing erheater comprising an' means separating the inlet ports from the outlet and provided With a series of relatively small openings distributed opposite said steam kdelivery ports; a corresponding seriesrof valves, each controllin one of said openings; means to operate sait? valves; and adjusting means associated with some of the valves whereby theymay be opened in advance of the others.`

In apparatus of the class described, the

combination of a superheater comprising an elongated chamber having a series of ports along itslength through which supeiheated steam is delivered to the chamber, and having an outlet through which the steam is `conveyed to the point of use; partitioning means separating the inlet ports from the outlet and provided with a series of relatively small openings distributed oppositel said steam delivery ports; 'a corresponding series of valves, each controlling one of said openings; means to operate said valves, and

adjusting means associated with the valves whereby during normal operation some of the valves may be 'caused to open farther than others;

8. In apparatus of the class described, the combination of a superheater comprising an elongated chamber `having a series of ports along its length through'which superheated steam is delivered lto the chamber, and having an outlet through which the steam is conveyedv to the point of use; partitioning means separating the inlet ports from the outlet and provided with a series of relatively small openings distributed opposite said steam delivery ports; a corresponding series of valves, each controlling one of said openings; means to operate said valves, and adjusting means associated with fthe valves whereby the valves may be caused to open in any desired order, and some of the valves `may be caused during normal operation to open farther than others.

9. In apparatus of the class described, the combination of a boiler; a superheater comrising a bi-chambered header and tubular superheater elements the two ends ,of each o f Whichare secured res ectively to the two header chambers; a diy-pipe delivering Steam from the boiler to one of the header chambers; a passage conveying steam. away from the other` of the header chambers; and a Series of comparatively small valves controlling'the How of'steam through said passage, `said valves beingI distributed along the second header chamber in juxtapositiony to thel element ends.

10. In apparatus of `the class described, the combination of a boiler; a superheater comprising a bi-chambered header and ioo y tubular superheater elements the two ends of each of which are secured respectively to the two header chambers; a dry-pipe delivering Steam from the boiler to one of the Cil header chambers; a passage conveying steam away from the other of the header chambers; a series of comparativeiysrnall poppet valves controlling the How of steam through said passage, .said valves being distributed along the second header chamber in juxtaposition to the element ends; a :shaftA arranged adjacent and parallel to the series of poppet valves; a series of operating elements on the shaft one for each valve and engaging it to operate it; and meansto rotate the shaft whereby said. valves may be opened and closed.

In Witness whereof I have hereunto affixed my signature.

RAY M. BROWN. 

